1000021201121 has 8 divisors (see below), whose sum is σ = 1005754824360. Its totient is φ = 994303798528.

The previous prime is 1000021201037. The next prime is 1000021201177. The reversal of 1000021201121 is 1211021200001.

It can be written as a sum of positive squares in 4 ways, for example, as 61662822400 + 938358378721 = 248320^2 + 968689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000021201121 - 2¹⁴ = 1000021184737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000021203121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931496 + ... + 4178121.

It is an arithmetic number, because the mean of its divisors is an integer number (125719353045).

Almost surely, 2^{1000021201121} is an apocalyptic number.

It is an amenable number.

1000021201121 is a deficient number, since it is larger than the sum of its proper divisors (5733623239).

1000021201121 is an equidigital number, since it uses as much as digits as its factorization.

1000021201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110323.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000021201121 its reverse (1211021200001), we get a palindrome (2211042401122).

The spelling of 1000021201121 in words is "one trillion, twenty-one million, two hundred one thousand, one hundred twenty-one".